The new, fast browser for Mac, PC and Linux. Firefox is made by Mozilla, the non profit champions of a healthy internet. Mozilla also tackles issues like privacy, misinformation and trolling by investing in fellowships, campaigns and new technologies designed to make the internet healthier. Mozilla Firefox Version 30.0' title='Mozilla Firefox Version 30.0' />http Developer. Mozilla Foundation. Note This is the last planned release of Firefox 2. Microsoft Live Email Client. All users are encouraged to upgrade to Firefox 3. Firefox 2. 0. 0. 20 does not include Phishing Protection. Release history Browser name Version Codename Release date Release type and highlights Firefox 5 5. Firefox 5. 0 Aurora April 13, 2011 First Firefox 5. Mozilla Firefox is a fast, light and tidy open source web browser. At its public launch in 2004 Mozilla Firefox was the first browser to challenge Microsoft Internet. Your system may not meet the requirements for Firefox, but you can try one of these versions.